Cobblestone Lake Dam
Key Takeaway
Cobblestone Lake Dam is classified as low hazard in Illinois. It was completed in 1993 and is 33 years old. Its primary use is recreation.
Physical Details
| Dam Height | 64 ft (taller than 96.2% in IL) |
| Dam Length | 450 ft |
| Dam Type | Earth |
| Max Storage | 105 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 43 cfs |
| Year Completed | 1993 (33 years old) |
| NID ID | IL50184 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
COBBLESTONE ESTATES HOMEOWNERS ASSOC.
Private
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Low Hazard 31 ftFrequently Asked Questions
What is the hazard classification of Cobblestone Lake Dam?
Cobblestone Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Cobblestone Lake Dam?
Cobblestone Lake Dam is owned by COBBLESTONE ESTATES HOMEOWNERS ASSOC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cobblestone Lake Dam built?
Cobblestone Lake Dam was completed in 1993, making it 33 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Cobblestone Lake Dam?
Cobblestone Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Cobblestone Lake Dam?
Cobblestone Lake Dam has a dam height of 64 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Cobblestone Lake Dam last inspected?
Cobblestone Lake Dam was last inspected on September 28, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.